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In looking at the Kubota Workshop Manual page S 93, a diagram shows a "fuel limit bolt" that affects the movement of governor fork lever #2. Anyone have any experience with changing adjustments on this bolt? Since I had success "limiting" fuel by turning the fuel delivery valves I can't help but...

I adjusted the stop that is part of the manual fuel shutoff on the IP. I screwed it out far enough that it would restrict fuel but not fully shut off the fuel. I think, as you advised, my next step is to have the IP professionally rebuilt. Then, as you say, that will eliminate the IP as a...

I attached a linkage to the manual fuel shutoff lever on the IP and adjusted the stop to restrict fuel but not completely shut fuel off at idle. When going downhill and over-revving happens the machine will slow to normal when I pull the fuel shutoff lever. This leads me to believe the...

I loosened the three "tamper proof" torx bolts that hold the barrels in place (on the top of the injection pump) and rotated them clockwise. There is just a few degrees of adjustment.

Yes I agree. It was this thread that nudged me to rotate the IP barrels. That worked for my initial "revving" issue but this down slope dilemma is a whole new challenge though most likely related. Thanks!

It is a big deal and I am hoping to find a solution at some point. When I described the initial "revving" issue to our local Kubota dealer shop foreman he had no suggestions other than to check that the rack moved freely and that the governor springs were in place. The engine runs beautifully -...

Went to the Messick's site and looked at governor and speed control plate parts diagrams for both the 2100d (manual transmission) and 2100hst (hydrostatic transmission) and they appear to be identical. So that at least provides some useful information on potential governor differences between...

Thanks for the info on the governor differences between a generator engine and a tractor engine. I can't help but think the same is true for a hydro vs manual transmission as well and perhaps this is my issue. For some reason when the engine is being "pushed" on the down hill the fuel is being...

Thank for the responses - much appreciated. Just for clarification I am not "cutting" fuel flow and the cylinders are not "dead" I am simply reducing fuel flow to decrease engine RPM running down slope. I had an interesting problem with this engine when I first installed it in the tractor. It...

This over revving issue happens at idle speed. If I head down slope at idle after I've gone about 20 feet the fuel increases on its own and the tractor starts speeding up. Idle is probably around 800 rpm. You are correct - this is not a compression braking issue whatsoever. When I override the...

I recently repowered a Cletrac HG with a Kubota 1105 engine out of a Jacobsen mower. I swapped out the hydrostatic flywheel for a flywheel that used the stock Kubota clutch since the tractor has a manual transmission. When driving the crawler tractor down a 40% slope the fuel increases on its...

I found this amazing thread while trouble shooting an idle issue with a Kubota 1105 diesel engine. Turns out my issue was identical to Kubix's issue. Don't know what I would have done had I not found this information. Sure didn't find anything else. At any rate I followed Kubix's solution -...